Method of making two-part stops for separable slide fastener tapes



Aug. 15, 1939. 1 M. KIESSLING, El AL 2,159,609

IETHOD OF IAKING TWO-YART STOPS FOR SEPARABLE SLIDE IASTEIIER TAPES.

' Original Filed May 11, 19:56 2 Sheets-Sheet 1 Bnnentor 113,2:Kieqsling, Adolph Hugger:

ttotneg g- 15, 1939- I M. KIES'SLING ET AL 2,169,609

IETHOD OF MAKING TWO-PART STOPS FOR SEPARABLE SLIDE PASTEIER TAPESOriginal Filed May 11, 1936 2 Sheets-Sheet 2' Zmventor Max Kalessl ing.Adolph Ifnlleyen (It orneg Patented Aug. 15, 1939 I UNITED STATE METHODOF MAKING TWO-PART STOPS FOR SEPARABLE SLIDE FASTENER TAPES MaxKiessling and Agolph Krieger, Waterbury,

- onn.

Original application May 11, 1936, Serial No. 78,990. Divided and thisapplication October 23, 1936, Serial No. 107,196

1 Claim.

This invention relates to methods of making separable slide fastenertapes, and more particularly to a two-part stop for use in detachablyholding the ends of a pair of slide fastener tapes together.

In the use of slide fastener tapes of the above nature having rows ofcooperating fastener elements along the opposing edges of the tapes, andin which said elements are adapted to be interlocked by. the movement ofa slide member, it has been found in many instances that the lastelement of the row at the end of a tape became direction of the arrows6-6.

loosened, and either shifted out of its proper posiseparation of theends of said tape.

One object of this invention is to provide a method of making a two-partstop of the above nature whereby the ends of the tapes will be fittedclosely and neatly together in an easy and positive manner.

Another object is to provide a method of making a device of the abovenature which, when clamped at the ends of-the slide fastener tapes, willprevent the last fastener element from being moved out of position orpulling ofl.

Still another object is to provide a method of making a detachable stopof the above nature consisting of a pair of cooperating male and femalemembers, each, of which is made from a single piece of metal.

A further object of this invention is to provide a method of making thefemale member of the detachable stop.

A still further object is to provide a method of making a detachablestop of the above nature which will be simple in construction,inexpensive to manufacture, easy to manipulate, compact, ornamental inappearance, and very eflicient and durable in use.

With these and other objects in view, there has been illustrated on theaccompanying drawings one form in which the invention may beconveniently embodied in practice.

In the drawings:

Fig. 1 illustrates a pair of interlocked fastener element tapes havingthe improved detachable stop assembled at the lower ends thereof.

Fig. 2 is a fragmentary view of the lower ends of said tapes as theyappear when separated.

Fig. 3 is an enlarged front view of the lower ends of the tapes showingthe detachable stop members in assembled position.

Fig. 4 is a similar enlarged view of the same taken from the rear.

Fig. 5 is an enlarged edge view taken on the tion or was pulled off,resulting in premature- Fig. 7 is an enlarged slde edge view of the malemember of the stop.

Fig. 8 is an enlarged side edge view of the female member of the same.

Figs. 9 to- 16 inclusive are views showing the 10 appearance of theblank after the successive steps in the method of making the femalemember of the stop.

Figs. 1'7 to 21 inclusive are similar views show ing the appearance ofthe blank after the successive steps employed in the method of makingthe male member of the stop.

This application is a division of a prior application by the sameinventors filed May 11, 1936, Serial No. 78,990, entitled Two-part stopsfor 20 separable slide fastener tapes.

Referring now to the drawings in which like reference numerals denotecorresponding parts throughout the several views, the fastener elementtapes upon the ends of which the detach- 25 able male and female membersof the improved stop are applied comprise a pair of narrow elongatedbeaded fabric strips or stringers l0 and Il, each having a row of forkedjaw elements l2 clamped upon the beaded edges thereof, and said rows ofelements are adapted to be interlocked for connecting the tapes togetherby the camming action of a tapered slide l3 mounted thereon, when it ispulled upwardly from the lower end thereof, as viewed in Fig. 1. Therows of connected elements I! are adapted to be disengaged from eachother to permit separation of the tapes by moving the slide iii in thereverse direction, all of which is in accordance with the well knownpractice in this art.

Each element l2 is provided with a pair of opposed jaws which arecrimped inwardly upon the edges of the tapes by suitable clamping toolsnot shown. The slide I3 is preferably provided with a hinged fingerpiece H to facilitate the manipue 45 lation thereof, said slidepreferably having a pair of parallel spaced plates l5 and I6 adapted toembrace the rows of elements l2 therebetween. The side plates l5 and I6are provided on both side edges with inwardly extending side flanges 50I! for confining the elements l2 and. forcing them together intocooperating engagement.

The detachable male and female members i8 and i9 of the stop forming thepresent invention are shown in Fig. l in assembled position applied 66.ber is attached to the tape, serve to facilitate the to the-bottomsofapair oftapes ii and il. Each of the members II and I. is preferablymade of one piece of material, such as a blank of sheet metal, formedand attached to the tapes accord-- ing to the methods to'be hereinafterthe slide it is moved upwardly.

The female member it includes a pai'r'of opposed tape-embracingfplates2. and' 21 having alined openings 22 therein which, when thememattachment of the tape to the edge of the article tobe closed.- Abovethe plates 2. and 2| and disposed alongthe edge of the tape abutting theelements i2, a tubular clip 23 is provided which embraces the tape edgeand is securely'crimpedthereto. The clip 23 extends upwardly from theplates and 2| to a point closely adJacent the last element I2. upon theend of the left-hand tape ill to which the member I. is attached, asviewed in Fig. 1. 'Below the clip 23 and with its axis in alinement withthe line of jointure of the two rows of elements i2 on the tape edges, ahollow intermediate cylindrical socket 24 is providcd. Provision is alsomade of a pair of sliderguiding ears 2!, one of which extends upwardlyfromeach of the plates 20 and 2! on opposite faces of the tape ill.

. Male stop member The male member I. also has opposing tapeembracingplates 28' and 21, similar to the plates 20 and 2| of the female member;and said plates 28 and 21 are likewise provided with circular openings28 to facilitate securing the tape ii to the article to be closed. Theplate 28 has an upstanding pointed prong 28 formed on its upper edgewhich is adapted to be passed through the tape ii and then bent over andpressed down formed on the-rear edge of the side part til, which isadapted to pass through the tape II and be bent over and pressed downupon the outer surface of the opposite side plate 3=| to firmly connectthe opposing tape embracing plates and 3|. The tubular edge portion 84connecting the side plates 30 and ii is curved and inclined outwardlyslightly from top to bottom and'is extended downwardly from the loweredge of these plates in the form of a cylindrical vertical tongue forcooperative engagement with the socket 24. of the plates 26 and 21 by aslot 38 with its axis in alinement with the line of Jointure of theinterlocking rows of.elements |2 on the tape edges above it.

The inclined tubular portion 34 extends above the last element l2 on thetape ii and is slotted, as at 36, to straddle the same. when inassembled position, the rolled tongue 35 of the male member l9 fitswithin the socket 24 of the female member ll, thereby detachablyconnecting the opposing lower ends of the tapes l0 and ii. A slot 31 isprovided in the meeting edges of the socket 24 to provide clearance forthe side plates 30 and 3| of the male member of the stop. The upper endof the slot 38 is adapted to abut against The tongue 35 is spaced fromthe lower edges,

a shoulder a at the beam of said slot :1 to hold the male and femalemembers it and II in their relative positions, as shown in Figs. 1, 3and 4, whereby the rows of elements |2 on the opposing tape edges willbeproperly interlocked when operation. In Fig. 10. the result of ashearing' operation by suitable tools, not shown, is illustrated,whereby a pair of opposing slots 4| and 42 are formed in the blank '40leaving a narrow intermediate connecting neck 43. Fig. 11 illustratesthe result of the next operation whereby one end of the blank is actedupon by suitable forming and shearing tools (not shown) to bend downportions thereof to provide a pair of sides and for the clip 23, whichis U-shaped in cross-section so that it may be fitted over the edge ofthe tape Iii and be crimped thereto by closing the sides 44 and 45together.

Fig. 12 illustrates the result of the next operation in which theintermediate portion of the blank" adjacent the clip 23 is bent up bysuitable forming tools to form a pair of parallel side portions 48 and41. In Figs. 13 and 14 the result of another operation is shown wherebythe side portions 48 and 41 are closed together as by forming tools, notshown, into tubular form, preferably around a mandrel, not shown, tocomplete the socket 2,4 and provide the slot 31 and its bottom shoulder38. The material of theblank 40 has also been acted upon during thisstep by suitable forming tools to bend up the side plates 20 and 2| intoparallelism. Figs. 15 and 16 lllustrate the results of the next stepwherein the blank is bent as by forming tools, not shown, at the neck 43in such a manner that the clip 23 and the socket 24 will assume aposition at rightangles to the side plates 20 and 2|. The final productresulting from the next and last operation is illustrated in Figs. 3 and4 wherein the side plates 20 and 2| are shown embracing the tape ill,and with the clip 23 crimped tightly to the.

ribbed edge of the tape I0 below" and abutting the last element |2thereon. The forming and shearing tools mentioned above have not beenshown on the drawings as it is thought that they would be obvious to anyworkman skilled in this art from a mere inspection of the drawings.

Method of making the male stop member The'steps in the method of makingthe male member I! are illustrated in Figs. 17 to 21, inclusive. Thus,Fig. 1'7 shows a blank 48 stamped out of sheet metal by the first orblanking operation. The openings 28, the prongs 29 and 33, the slot 38,and a portion 48 from which the tubular tongue 35 is rolled are allblanked out in the first step. The next operation results in bendingdown the prongs 29 and 33 at rightangles to the blank 48, as shown inFig. 18, Fig. 19 illustrates the appearance of the blank 48 after thenext step wherein the side plates 30 and 3| are bent, as by formingtools at rightangles to each other, and the inclined tubular portion 34and the vertical tongue ll are partially formed. 7"

Figs. 20 and 21 show the results of the next operation whereby the sideplates 28 and 21 are bent at right-angles to each other and the inclinedtubular portion 34 and the tongue 35 are more completely formed. Thetooth-like projections 50 of the tongue 49 are bent inwardly,

' firmly against the same, the prongs 29 and 33 being passed through*said tape and bent over, as by forming tools, into engagement with theplate 21 and the side plate 3|, respectively. This last step completesthe tubular portion 34 and the tongue 35 and also disposes the malemember l 9 upon the tape end with the lowest element l2 in the slot 36.

Operation In operation, in order to connect the tapes I!) and H, theslide I3, which is permanently retained on the tape ID, will first bepushed downwardly as far as it will go until it strikes the socket 24 ofthe female member I8. The tongue 35 of the male member I! will then beinserted through the plates l5 and I6 of the slide and into the socket24. The slide 13 will next be pulled upwardly while holding the malemember I! firmly, causing the rows of elements l2 to be securelyinterlocked together. When connecting the members l8 and I! of the slidestop, as above described, the,- male member I9 should be presseddownwardly with suflicient force to insure that the edge 'of the slot 38of the side plates 30 and 3| engages against the shoulder 39 of the slot31 in the female member l8, thus positioning the lowest elements 12 onthe tapes Ill and II properly to be interengaged by the cam slide l3during its upward movement therealong.

The curved bottom portion 52 connecting the side plates 20 and 2| of thefemale member l8 serves to protect the lower end of the tape l0 againstfraying. Likewise, the curved bottom section 53 connecting the sideplates 26 and 21 of the male member i9 also protects the end edge of thetape II. The clip 23 which is clamped along the edge of the tape l0stiffens and reinforces said tape at this point and prevents looseningof the lower adjacent element 12. The side plates 30 and 3| of the malemember reinforce and stiifen the tape ll adjacent the lowermost elementl2, and the slot 35 prevents the lowermost element l2 on the tape H fromloosening or becoming dislocated. The prongs 29 and 33 securely maintainthe male member ii! in proper positon on the tape I. I.

While there has been disclosed in this specification one form in whichthe invention may be embodied and a preferred method of making the same,it is to be understood that this form and method are shown and.described for the purpose of illustration only, and that the inventionis not to be limited to the specific disclosure, but may be modified andembodied in various forms without departing from its spirit. In

.short, the invention includesall the modifications and embodimentscoming within the scope of the following claim.

Having thus fully described the invention, what is claimed as new, andfor which it is ,desired to secure Letters Patent, is:

The method of making the female member of a two-part stop for the slideof a pair of separa ble slide fastener tapes, which comprises shearing ablank from flat sheet metal, bending one end portion of said blank inone. direction to form a bead embracing clip, bending an intermediateportion of said blank in the opposite direction and forming it into atubular socket for the prong of the male member, bending the other endportion of the blank in the same direction as said clip to embrace thesides of one of said tapes, and then swinging said socket and clip as aunit in the same plane through a rightangle to cause said clip andsocket to abut adjacent sides of said tape embracing end portion.

' MAX KIESSLINGt ADOLPH KRIEGER.

